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FRANKLIN W. `WILLARD, OF NEWT YORK, N. Y.

VAPOR-LAMP.

Specification of Letters atent No. 30,899, dated December 11, 18,60.

To allwhom t may concern:

Be it known ythat I, FRANKLIN W. WIL- LARD, of the city, county, andState of New York, have invented a new and useful Improvenient inVaporLamps; and I do declare the following to be a clear and exactdescription.

The lamp is constructed by elevating a fountain which contains the oilat such a height above the burner as to give the required amount ofpressure on the column of oil, which is necessary to resist the backwardforce of the vapor in the vapory chamber. The flow of oil through thefeed pipe from the fountain to the burner being regulated and cut ofi:lby means of a stop cock placed on the feed pipe between the fountain andburner. The burner, which is screwed on to the lower end of the feedpipe is constructed of copper or other metal or composition which is agood conductor and retainer of heat. A piece of metal about one inchsquare and about a sixteenth of an inch in thickness is cut into theshape desired and of a size to be covered only by the blue portion ofthe flame this piece of metal after being shaped as desired, is bent orcrooked through the center. Surrounding this bent plate is a wire bentin shape to correspond with the edges of the bent plate. The wire israised above the top edge of the bent plate so as to leave a spacebetween the top of the plate and the wire by forming a draft between theplate and the wire which serves to submit the wire to a greater degreeof heat. rlhe ends of the wire are brought down to the lower point ofthe bent plate and brazed on to a metal tube this tube being fitted tois brazed on to the back side of the bent plate the upper end of thetube being connected to the feed pipe and the lower end which projectsbelow the bent plate is connected with an elbow by means of a screw.rlhe other arm of the elbow pointing upward is furnished with a nipple.Through this nipple and pointing directly toward the perpendicular partof the bent plate is an annular opening. From this opening and leadinginto the elbow and from thence into the metal tube is a passage. Thistube which is brazed on to the back side of the bent plate is filled andpacked with line drawn wire which answers the purpose of a vaporchamber. Over the nipple and pointing toward the perpendicular part ofthe bent plate is a strip of metal.

l The burner being thus completed is screwed on to the lower end of thefeed pipe and being heated with the flame of an alcohol lamp which maybe connected permanently to the vapor lamp or otherwise. The oil letinto the feed pipe is brought in contact with the fine drawn wire in thetube which forms a porous core through which the oily vapor passes onits way to the burner is instantly converted into vapor and being driventhrough the passage of the elbow out of the annular opening is forcedagainst the stri-p nof metal which is fastened to the nipple and pointstoward the perpendicular part of the bent plate. From thence it isforced down and striking the inclined portion of the bent plate theforce of the jet being broken by the strip of metal. The vapor is spreadand directed as it strikes obliquely on the surface of the inclined partof the plate, where it becomes partially mixed with atmospheric air andis there partially ignited. The vapor and flame rushes against theperpendicular portion of the plate and is spread into a wider andthinner sheet and after leaving the plate rises above the wire over thetop of the plate. The flame then assumes a bright color and burns withgreat brilliancy and persistence, the heat which is necessary to heatthe burner to vaporize the oil being used from the blue portions of theflame and not taken at the expense of the light, as the plate should bemade no larger and of a shape to be covered by the blue portion of theflame. The heat which is imparted to the wire which surrounds the plateis conducted by the wire to the lower part of the tube and elbow to keepup heat on that portion of the burner and thereby prevent thecondensation of the vapor after it has been generated by passing throughthe tube filled with fine drawn wire.

Having thus given a general description of my invention, I will now givea more particular description in detail reference being had to thedrawings and figures x tain used to hold the oil. shows the stop cockused for regulating the How of oil through the channelway C. D, showsthe inside of the metal tube brazed on to the backside of bent plate K.f is the elbow and the arrow shows the direction of the vapor in itspassage from the vapor cha1nber inside of tube e to the annular openingn, in the nipple G. I is the strip of metal used for breaking the forceof the jet of vapor and spreading it obliquely on the bent plate K. Jshows the wire which surrounds the bent plate and is used to keep up theheat on the lower portion of the burner thereby preventing condensationof the vapor in its passage from the vapor chainber through the elbow tothe nipple. The

black lines in side of metal tube e, shows the position of the finedrawn wire which forms the porous core.

Fig. 2 is a front view of the burner showing bent plate K surrounded bythe wire J and the strip I and nipple G.

Fig. 3 is a rear view of the same showing' the end of the metal tubelled with fine drawn wire, the wire J the bent plate K, the inside ofvapor chamber d andelbow f.

Having thus given a description of my invention, I wish it understoodthat I do not claim an elevated fountain for holding oil nor vdo I claima stop cock for regulating the flow of oil into a burner, nor a feedpipe to convey oil from a fountain, no1' a. tube filled with wire, forthese have all been described before and their particular uses andpurposes set forth, but

What I do claim and desire to secure by Letters Patent is- Ihecombination of the bent plate K strip of metal i and the wire Jconstructed and operating for the purposes and uses substantially as setforth in the specification.

FRANKLIN W. WILLARD.

Witnesses:

E. I-IARRIsEN REED, A. C. SUMMERS.

